16721462452 has 12 divisors (see below), whose sum is σ = 29267985376. Its totient is φ = 8359180920.

The previous prime is 16721462447. The next prime is 16721462473. The reversal of 16721462452 is 25426412761.

It is a happy number.

16721462452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363138 + ... + 406585.

Almost surely, 2^16721462452 is an apocalyptic number.

It is an amenable number.

16721462452 is a deficient number, since it is larger than the sum of its proper divisors (12546522924).

16721462452 is a wasteful number, since it uses less digits than its factorization.

16721462452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775158 (or 775156 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The spelling of 16721462452 in words is "sixteen billion, seven hundred twenty-one million, four hundred sixty-two thousand, four hundred fifty-two".